Thank you so much for these great videos . I am just a bit confused if the q BC used is heat flux so then the unit should be W/m2 rather than W/m3( per unit volume, which is written in the slide in the video) is flux defined differently in openfoam?
Very good explanation and illustration. I would like to know how to get wall heat flux for option 4 since neither q nor k is given. In addition, for option 4, is the value the outer surface temperature? Thanks
Does the value in the condition represent temperature value ? If we are giving heat flux value , why it is needed ? Should it be corelated to flux value, how ?
That value is default value.It could be any arbitrary value. It is required to visualise result in paraView. In the 0 time, OpenFOAM is not calculating anything but to see it in the paraview, it asks for some value. That is the reason of specifying default value in boundary conditions. You will see same thing in other boundary conditions as well.
I am a Japanese researcher of heat sterilization . I am very interesting in your youtube videoes. I think they are associated with canning too. Can I download the source code?
Sir, I am getting this error --> FOAM FATAL ERROR: Cannot find a fluidThermo or solidThermo instance From function Foam::tmp Foam::temperatureCoupledBase::kappa(const fvPatchScalarField&) const in file derivedFvPatchFields/temperatureCoupledBase/temperatureCoupledBase.C at line 124. FOAM exiting please help.
You might not have defined thermoType in thermophysicalProperties file of either of the three regions: fluid, heater1, heater2. You can use: 1. For Solids: thermoType { type heSolidThermo; mixture pureMixture; transport constIso; thermo hConst; equationOfState rhoConst; specie specie; energy sensibleEnthalpy; } 2. For Fluids: thermoType { type heRhoThermo; mixture pureMixture; transport const; thermo hConst; equationOfState rhoConst; specie specie; energy sensibleEnthalpy; } THANK YOU!!!
Hi! I want someone to help me urgently. I will pay for that. The case is for openfoam only. Problem description: I have a circular tube of length 1m and dia 4 mm. At the inlet saturated vapor at 312.54 K is supplied. It is a condensation problem. Head load applied on the wall can be 250 W Or 500 W. Mass flux can be 250 or 500 kg/m2.s. Fluid is Propylene at 312.54 K. Now I want to have a simulation where all flow regimes are captured properly. If anyone out there is interested to help, plz feel free to ping me personaly.
Thank you so much for these great videos . I am just a bit confused if the q BC used is heat flux so then the unit should be W/m2 rather than W/m3( per unit volume, which is written in the slide in the video) is flux defined differently in openfoam?
Great tutorial 👍. Thanks
Very helpful video man!
Are you using the laplacianfoam solver?
Very good explanation and illustration. I would like to know how to get wall heat flux for option 4 since neither q nor k is given. In addition, for option 4, is the value the outer surface temperature? Thanks
Thank you for the video. I have a question: if I would like to run a laplacianFOAM simulation, how could I impose a free convection BC?
Does the value in the condition represent temperature value ? If we are giving heat flux value , why it is needed ? Should it be corelated to flux value, how ?
That value is default value.It could be any arbitrary value. It is required to visualise result in paraView. In the 0 time, OpenFOAM is not calculating anything but to see it in the paraview, it asks for some value. That is the reason of specifying default value in boundary conditions. You will see same thing in other boundary conditions as well.
@@DDFluids so ofter zero time, the temperature value will be calculated accroding to the heatflux value , right ?
@@simulator4731 yes, after 0 time solver will calculate temperature. And those values will be correct.
I had the same question, thank you!
The "thermophysicalProperties" file in case 3 is same as the tutorials（heatTransfer/buoyantSimpleForm/circuitBoardCoolong)?
I am a Japanese researcher of heat sterilization . I am very interesting in your youtube videoes. I think they are associated with canning too. Can I download the source code?
what if ambient temperature is a time dependent variable?
Sir, I am getting this error
--> FOAM FATAL ERROR:
Cannot find a fluidThermo or solidThermo instance
From function Foam::tmp Foam::temperatureCoupledBase::kappa(const fvPatchScalarField&) const
in file derivedFvPatchFields/temperatureCoupledBase/temperatureCoupledBase.C at line 124.
FOAM exiting
please help.
You might not have defined thermoType in thermophysicalProperties file of either of the three regions: fluid, heater1, heater2.
You can use:
1. For Solids:
thermoType
{
type heSolidThermo;
mixture pureMixture;
transport constIso;
thermo hConst;
equationOfState rhoConst;
specie specie;
energy sensibleEnthalpy;
}
2. For Fluids:
thermoType
{
type heRhoThermo;
mixture pureMixture;
transport const;
thermo hConst;
equationOfState rhoConst;
specie specie;
energy sensibleEnthalpy;
}
THANK YOU!!!
Very useful video. I'd like the presentation and materials but I'm not on telegram. Is there another way to get the material?
For now, I have posted on telegram channel only. If you know a better way, please let me know.
You can visit my website, I have added all the pdfs there. www.ddfluids.in
Can i Have your Email? I found an error according to your method, can you help me see how to solve it
Hi! I want someone to help me urgently. I will pay for that. The case is for openfoam only.
Problem description:
I have a circular tube of length 1m and dia 4 mm. At the inlet saturated vapor at 312.54 K is supplied. It is a condensation problem.
Head load applied on the wall can be 250 W Or 500 W.
Mass flux can be 250 or 500 kg/m2.s.
Fluid is Propylene at 312.54 K.
Now I want to have a simulation where all flow regimes are captured properly.
If anyone out there is interested to help, plz feel free to ping me personaly.